Xiaolu Battery Blog

 In the realm of rechargeable batteries, NMC (Nickel Manganese Cobalt Oxide) and NCA (Nickel Cobalt Aluminum Oxide) cells are two widely used chemistries, especially popular in electric vehicles (EVs), unmanned aerial vehicles (UAVs), and consumer electronics. Each type offers unique advantages, making them suitable for specific needs in energy density, power output, and lifespan. Knowing the differences between NMC and NCA cells can help in choosing the most appropriate battery for a particular application.   What is an NMC Battery?   An  NMC battery cell , or Nickel Manganese Cobalt Oxide cell, is a type of lithium-ion battery that uses a cathode made from a combination of nickel, manganese, and cobalt. The specific ratio of these elements in NMC batteries can vary, with common compositions being NMC 811 (8:1:1), NMC 532 (5:3:2), and NMC 622 (6:2:2), representing the proportions of nickel, manganese, and cobalt in the cathode material. NMC cathodes generally contai...

  Battery Dimensions and Design   The 21700 and 18650 refer to battery types differentiated by their dimensions. The 18650 battery measures 18mm in diameter and 65mm in length, while the larger 21700 battery is 21mm in diameter and 70mm in length. These slight differences affect compatibility with devices, as the 21700 is often used in larger applications or newer technology models.   What Are 21700 Batteries?   The term " 21700 battery " refers to a rechargeable lithium-ion cell with a 21 mm diameter and 70 mm length, similar to the way the 18650 cell is named. As more electronic devices move toward lithium-ion power sources, this size gained popularity, particularly in electric vehicles like Tesla cars and electric scooters.   - 21700 battery is short-hand for a rechargeable, lithium ion battery that is 21 mm in diameter and 70 mm long. - The big advantage of a 21700 battery over an 18650 battery is the overall energy capacity possible. - 21700 batteries are a...

 When discussing lithium-ion batteries, two major players stand out: Lithium Iron Phosphate (LFP) and Nickel Manganese Cobalt (NMC). Both have established strong footholds in various industries, but the question remains—which one offers the best performance for your needs?   What Are LFP and NMC Batteries?   LFP Batteries:   LFP batteries  utilize lithium iron phosphate as the cathode material, delivering a steady voltage of approximately 3.2V. They are increasingly popular in household energy storage systems and solar installations, largely due to their high safety rating and long cycle life.   NMC Batteries:   NMC batteries  feature a cathode blend of nickel, cobalt, and manganese, paired with a graphite anode. These batteries typically offer a higher voltage, around 3.7V, making them particularly well-suited for electric vehicles (EVs), with companies like Tesla and BYD favoring NMC for their energy density and performance in automotive applica...

  Understanding the differences between IMR, ICR, INR, and IFR  18650 batteries  is crucial for selecting the most suitable battery for your specific needs. Each classification represents a distinct chemical composition and performance profile, making it essential to choose the right type for optimized usage. This article provides a detailed analysis of IMR, ICR, INR, and IFR 18650 batteries, focusing on their unique properties and ideal applications.   Part 1: IMR 18650 Battery I: Lithium (Li)   M: Manganese (Mn)   R: Round Cell (R)     Chemical Composition   IMR 18650 batteries, short for "Lithium Manganese Oxide Rechargeable," use lithium manganese oxide (LiMn₂O₄) as their cathode material. This specific chemical composition gives these batteries unique characteristics that influence their performance and safety.   Advantages   - Enhanced Safety: The use of lithium manganese oxide results in a safer chemistry, significantly reduc...

  A secondary lithium battery operates similarly to other primary batteries, providing power to devices (a process known as discharging). However, unlike primary batteries, it can be recharged and reused. For a detailed comparison between SLA (sealed lead acid) and lithium batteries, you can refer to our guide here. In this blog, we will explore  lithium battery cells  in more depth, discussing their configurations, practical applications, and how their construction makes them well-suited for specific use cases.   LITHIUM CELL FORM FACTOR When you take off the top of a lithium battery pack, you’ll first notice the individual cells and a circuit board of some kind. There are three types of cells that are used in lithium batteries: cylindrical, prismatic, and pouch cells. For the purpose of this blog, all cells are lithium iron phosphate (LiFePO4) and 3.2 volts (V).   CYLINDRICAL LITHIUM CELLS   A  cylindrical cell  resembles a traditional hous...

  Cylindrical batteries   can be categorized based on their filler materials into several types: lithium iron phosphate batteries, lithium cobalt oxide batteries, lithium manganese oxide batteries, and cobalt-manganese hybrid batteries. Additionally,  cylindrical lithium batteries  are differentiated by their shell types, which include steel shell lithium batteries and polymer shell lithium batteries.   Part 1: Characteristics of Cylindrical Batteries 1. Appearance of Cylindrical Lithium Batteries Cylindrical lithium batteries typically consist of a positive electrode material (such as nickel-cobalt oxide or zinc-manganese oxide), separator paper, and an electrolyte. The battery casing is usually made from an aluminum-plastic composite pipe.   2. Capacity of Cylindrical Lithium Batteries The rated energy density of a single cylindrical lithium battery ranges from 300 to 500 Wh/kg, with a specific power exceeding 100 W. The actual performance can vary depend...